Sequential sampling of ribes populations in the control of white pine blister rust (Cronartium ribicola Fischer) in California

Harold R. Offord

Treesearch

Sequential sampling of ribes populations in the control of white pine blister rust (Cronartium ribicola Fischer) in California

Informally Refereed

Authors:

Harold R. Offord

Year:

1966

Type:

Research Paper

Station:

Pacific Southwest Research Station

Source:

Res. Paper PSW-RP-36. Berkeley, CA: Pacific Southwest Forest & Range Experiment Station, Forest Service, U. S. Department of Agriculture; 14 p

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Abstract

Sequential sampling based on a negative binomial distribution of ribes populations required less than half the time taken by regular systematic line transect sampling in a comparison test. It gave the same control decision as the regular method in 9 of 13 field trials. A computer program that permits sequential plans to be built readily for other white pine regions is described.

Keywords

Cronartium ribicola, ribes surveys, sampling theory, sequential sampling, costs

Citation

Offord, Harold R. 1966. Sequential sampling of ribes populations in the control of white pine blister rust (Cronartium ribicola Fischer) in California. Res. Paper PSW-RP-36. Berkeley, CA: Pacific Southwest Forest & Range Experiment Station, Forest Service, U. S. Department of Agriculture; 14 p